Quote Originally Posted by 200sx View Post
my car had exacly the same symptoms,turned out my ecu was sending funny signals to my fuel pump,cutting it off for a second and not signaling it properly so the car would rev smooth,i had this problem for a while,wired the fuel pump direct and its be fine ever since...i dunno is your pump wired direct or what...
yup the pump is wired direct to the battery via switch.

Danmoorhead reckons i could have a vaccum pipe disconnected.

Another thing is that the car hasnt ran in a while, would that contribute to it??